The Museum of the Rockies (MOR) in Bozeman, Montana houses one of the world's largest collections of North American dinosaur fossils, curated by John R. 'Jack" Horner, and also is the location of one of the few paleohistology laboratories in the world ‒ the Gabriel Lab for Cellullar and Molecular Paleontology. Research here is focused on paleohistology; the study of the microscopic structure of fossil specimens, which allows for a deeper exploration into dinosaur growth, physiology and behavior. Under the technical expertise of Ellen-Thérèse Lamm, the Gabriel Lab has produced an unparalleled collection of thin-section slides of nearly 2,000 fossil specimens, representing over 24 years of research in paleohistology.